Paper spool



V "35mm +Mw g5' .E5 t I a@ 1,628,040 Es. VE; FRANKE l PAPER SPOOL A Filed Aug. 21. 192s lll Patented May 10, 1927.

UNITED STATES BERNARD E. FRANKE, OF CATONSVILLE, MARYLAND.

PAPER sroor..v

Application filed Augustr21, 1926. Serial No. 130,589.

This invention relates to spools and proposes primarily the construction of a spool fabricated entirely from sheet paper stock. One of the objects of the invention is to provide a spool that can be cheaply and economically constructed with the manufacturing facilities ordinarily at the. command of the paper boX maker.

Another object 0f the invention is to con struct a spool of the class described which shall possess unusual rigidity as well as other superior qualities such as will appear as a description of the following illustrative embodiment of the invention proceeds.

In the drawings in which the same reference characters are used in the .several views to designate the identical parts,

Figure 1 is a side elevation of a spool in which the principles of vthe invention are exemplified.

Figure 2 is a similar view partly in section. j

Figure 3 is a plan view of the spool.

Figure l is a cross section through the barrel.

Referrinof now in detail to the several iigures, the reference character l represents the barrel of the spool which as shown, is made of a spirally wound paper tube consisting of one or more layers of sheet paper stock. The number of layers in the winding is unimportant, being naturally greater accordingT as it is desired to increase the'sturdiness of the spool; neither is the invention to be understood as restrictedto the spiral arrangement of winding.

The ends of the barrel are furnished with caps 2, pref-erably of paper, with pressed lianges 3 fitting snugly over the peripheral edges of the barrel and being suitably united thereto, as by gluing. The caps are formed with central spindle apertures 4 which are normally of considerably smaller size than the diameter of the barrel.

The spool is provided with heads 5, each formed as a relatively flat hollow cylinder fabricated from a pair of inner and outer caps 6 and 7 respectively having pressed flanges 8, said caps fitting over the opposite sides of a ring 9, the latter being preferably a cylindrical section of tubular stock similar to that of the barrel 1 but of larger diameter.

The inner and outer caps form walls for the chamber within the head and will hereinafter, in general, be referred to as walls in order to distinguish them from the caps at the ends of the barrel.

The inner wall 6 is formed with a central aperture l() of such diameter as to permit the capped end of the barrel lbeing passed through it to a position of abutment against the inner face ofthe outer wall 7. The latter wall is provided with a spindle aperture registering with the spindle aperture Ain the end of lthe barrel. The annular area of the outer wall surrounding the spindle aperture affords a broad gluing joint between the head and capped end of the barrel by means of which said parts are firmly united, and the end of the cap 2 reinforces the outer wall 7, providing a part of plural thickness serving as the spindle bearing.

Great rigidity is imparted to the connection between the head and barrel by the inner wall 6 which makes a substantially close joint with the barrel inwardly of the glued oint, and by contacting with the barrel, resists all appreciable bending movement at the joint, maintaining the heads normal Ato the axis of the barrel against all reasonable pressure.

A number of new and inobvious results are achieved through the provision of the free and unglued joint between the inner wall and barrel. lt will be noted that the flange 3 of the barrel` cap is preferably of less width than that of the chamber which encloses it, so that all of the glued connections are well within the chamber, the inner wall 6 holding the material that is wound upon the spool isolated from the glued joints, so that the spool may be used for the fin-est of laces or ribbons without fear of thein being stained or otherwise damaged by contact with the glue, should the latter at any time become tacky through dampness.

The free relation between the inner wall 6 and the surface of the barrel also permits the wall to yield under the endwise pressure of such materials as expand endwise when wound under tension, relieving the glued joints at the end of the barrel of excessive strain, thereby preserving their integrity.

The cylindrical rims constituted by the flanges 8 or said flanges in combination with the rings 9, afford surfaces of practical width for the application of labels circumferentially of the spool. This is of great advantage, for labels so arranged are visible no matter how the spools are laid for display, whereas with the labeling surfaces confined to the ends of the heads, as in ordinary spools, the labels are frequently obscured by the end to end arrangement of the lspools on the display Counter. l

It is obvious that a number of novel and desirable Characteristics of this spool are not contingent upon its being made of paper, wherefore in certain phases of the invention, it is not limited by the material einployed.

While in the above description l have disclosed what l believe to be a preferred and practical embodiment of my invention, it is to 'be understood that the specific details de- `scribed are not llimitative in their eifectupon the invention but merely by way of example, except in so far as they areexpressly prescribed `by the terms of the appended claims.

Having described my invention what I claim asnew and desire to secure `by Letters Patent, `is

l. A spool including? a. tau-rel and heads,

the latter being formed wiih inner and outer spaced walls, said barrel erendiugl; lirough the inner walls and being; a', Hed to the outer walls, said inner walls beine' ronstriuted to yield under endwise pressure of the nniterial woundupon said spool, relieving the joints between said barrel and outer heads of este# sive strain.

2. A spool .including a barrel and heads, said barrel being affixed to said heads, the latter including means yielding` under endwise pressure of the material wound upon said spool, to relieve the joints bew'een said barrel and heads of excessive strain.

3. A spool including a barrel, a hollow head having` inner and outer walls,the inner` wall being provided with a perforation to admit said barrel, the latter extending through said perforation and being in ad herence with the outer wall.

4. A spool including' a barrel, a capon the end of said barrel, a hollow head provided with inner and outer walls, the inner wall having a` perforation to admit said barrel, the latter extending through said perforation and having` the cap thereof in adherence with the outer wall, forming, in those surfaces which are .in adhesive Contact, a rein-forcing area for said head, of plural thickness.

5. A spoolincluding a barrel, a cap on the end of said barrel, havingl a` spindle perforation, a hollow head provided with inner and outer walls, the latter being provided with aspindle Vperforation adapted to register with the spindle perforation in said cap, the inner wall .havinga perforation of a size freely to surround saidy barrel, the lat-ter eirtending through said perforationand having1 the cap thereof in adherence with the outer wall, forming in those surfaces which adhere an annularl reinforcing areaabout said spindle perforations.

G. A spool including a barrel, a cap close ing the end of said barrel, a hollow head provided with inner'andouter walls, the inner wall having a perforation of a size freely to surround said barrel, forming a free glueless joint therewith, said barrel extending` through said perforation and .having the cap thereof glued to said outer wall.

'.7. A spool including a barrel, a hollow head for each end of said barrel including,` inner and outer walls enclosing` a Chamber, said inner wall being formed with a perforation of a size to admit the end of said barrel,k

a fiangedrap glued to said barrel, said Cap being glued to said outer wall, said chamber being of such width that the inner wall estends inwardly beyond the Qlued joint between said cap and barrel.

8. A spool including a barrel,- flanged caps htting the ends of said barrel and being' glued theretohollow heads at the ends of the barrel each comprising' a ring, and flanged caps fitting the opposite sides of said ring and being; glued thereto, said caps lforming inner and outer walls for said head, the inner wall having a perforation of a sizeto surround said barrel, the vlatter extendingl through said perforation and having the cap thereof glued to said outer wall.

Signed by Ine at Baltimore, Maryland, this 20th day of August, 1926.

BERNARD E. FRANKE. 

